A new name was added to the list of celebrities mired in drug abuse scandals recently. Wang Xuebing, a famous actor that has played a righteous policeman on several occasions, was picked up by Beijing police on Tuesday for alleged drug use.

Wang starred in Chinese thriller film Black Coal, Thin Ice, which won a Golden Bear for best film at the 2014 Berlin International Film Festival. In 2005, he participated in an anti-drug campaign and later said he was willing to use the high levels of attention he attracted to contribute to these efforts. The sharp contrast between his words and the latest capture looks pretty ironic to many.

It is worth noting that just two days ago Gao Feng, a former Chinese national football player, was also found to have used methamphetamine after he was involved in a violent attack.

While last year many fans showed compassion and even tolerance for stars who were revealed to be drug users, tens of thousands of online comments following Wang's capture mostly pointed to the lack of self-discipline in the entertainment business. Some said that in China, celebrities have little to lose for their mistakes and hence often put aside their due social responsibility as a public figure.

In fact, some measures have been taken last year after nearly a dozen celebrities were caught for drug use or soliciting prostitutes, which greatly challenged the moral bottom line for the business and also the public's tolerance.

In August, the Beijing Trade Association for Performances and 42 agents promised to never employ performers involved in drug use. Soon, China's media watchdog banned stars convicted on charges of drug abuse or prostitution from State television and other media outlets.

These are harsh measures, which even triggered some controversies among the public as to whether the steps were too tough. However, when new scandals of this kind come up and hit the headlines from time to time, it appears that many in the entertainment community haven't learned enough from their peers.

Meanwhile, the frequent headlines about celebrity scandals will predictably lessen the public's confidence and trust in the entertainment business and they may believe that all the people in the business have low moral standards. This will consequently harm the business itself.

South Korea, with its robust entertainment industry, deals with scandalous stars very harshly and anyone caught abusing drugs can expect an end to their career. Western audiences may be more tolerant, but they don't spoil celebrities. Chinese stars have to be mindful of what they are supposed to do and be more self-disciplined.